diff mbox

[v2,1/7] selftest: sync: basic tests for sw_sync framework

Message ID 20161019124954.29232-2-emilio.lopez@collabora.co.uk (mailing list archive)
State New, archived
Headers show

Commit Message

Emilio López Oct. 19, 2016, 12:49 p.m. UTC
These tests are based on the libsync test suite from Android.
This commit lays the ground for future tests, as well as includes
tests for a variety of basic allocation commands.

Signed-off-by: Emilio López <emilio.lopez@collabora.co.uk>
---
 tools/testing/selftests/Makefile          |   1 +
 tools/testing/selftests/sync/.gitignore   |   1 +
 tools/testing/selftests/sync/Makefile     |  18 +++
 tools/testing/selftests/sync/sw_sync.h    |  46 +++++++
 tools/testing/selftests/sync/sync.c       | 221 ++++++++++++++++++++++++++++++
 tools/testing/selftests/sync/sync.h       |  40 ++++++
 tools/testing/selftests/sync/sync_alloc.c |  74 ++++++++++
 tools/testing/selftests/sync/sync_test.c  |  71 ++++++++++
 tools/testing/selftests/sync/synctest.h   |  47 +++++++
 9 files changed, 519 insertions(+)
 create mode 100644 tools/testing/selftests/sync/.gitignore
 create mode 100644 tools/testing/selftests/sync/Makefile
 create mode 100644 tools/testing/selftests/sync/sw_sync.h
 create mode 100644 tools/testing/selftests/sync/sync.c
 create mode 100644 tools/testing/selftests/sync/sync.h
 create mode 100644 tools/testing/selftests/sync/sync_alloc.c
 create mode 100644 tools/testing/selftests/sync/sync_test.c
 create mode 100644 tools/testing/selftests/sync/synctest.h

Comments

Gustavo Padovan Nov. 1, 2016, 4:18 p.m. UTC | #1
Hi Emilio,

2016-10-19 Emilio López <emilio.lopez@collabora.co.uk>:

> These tests are based on the libsync test suite from Android.
> This commit lays the ground for future tests, as well as includes
> tests for a variety of basic allocation commands.
> 
> Signed-off-by: Emilio López <emilio.lopez@collabora.co.uk>
> ---
>  tools/testing/selftests/Makefile          |   1 +
>  tools/testing/selftests/sync/.gitignore   |   1 +
>  tools/testing/selftests/sync/Makefile     |  18 +++
>  tools/testing/selftests/sync/sw_sync.h    |  46 +++++++
>  tools/testing/selftests/sync/sync.c       | 221 ++++++++++++++++++++++++++++++
>  tools/testing/selftests/sync/sync.h       |  40 ++++++
>  tools/testing/selftests/sync/sync_alloc.c |  74 ++++++++++
>  tools/testing/selftests/sync/sync_test.c  |  71 ++++++++++
>  tools/testing/selftests/sync/synctest.h   |  47 +++++++
>  9 files changed, 519 insertions(+)
>  create mode 100644 tools/testing/selftests/sync/.gitignore
>  create mode 100644 tools/testing/selftests/sync/Makefile
>  create mode 100644 tools/testing/selftests/sync/sw_sync.h
>  create mode 100644 tools/testing/selftests/sync/sync.c
>  create mode 100644 tools/testing/selftests/sync/sync.h
>  create mode 100644 tools/testing/selftests/sync/sync_alloc.c
>  create mode 100644 tools/testing/selftests/sync/sync_test.c
>  create mode 100644 tools/testing/selftests/sync/synctest.h
> 
> diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile
> index f770dba..69cf1a6 100644
> --- a/tools/testing/selftests/Makefile
> +++ b/tools/testing/selftests/Makefile
> @@ -23,6 +23,7 @@ TARGETS += seccomp
>  TARGETS += sigaltstack
>  TARGETS += size
>  TARGETS += static_keys
> +TARGETS += sync
>  TARGETS += sysctl
>  ifneq (1, $(quicktest))
>  TARGETS += timers
> diff --git a/tools/testing/selftests/sync/.gitignore b/tools/testing/selftests/sync/.gitignore
> new file mode 100644
> index 0000000..f5091e7
> --- /dev/null
> +++ b/tools/testing/selftests/sync/.gitignore
> @@ -0,0 +1 @@
> +sync_test
> diff --git a/tools/testing/selftests/sync/Makefile b/tools/testing/selftests/sync/Makefile
> new file mode 100644
> index 0000000..620a59a
> --- /dev/null
> +++ b/tools/testing/selftests/sync/Makefile
> @@ -0,0 +1,18 @@
> +CFLAGS += -O2 -g -std=gnu89 -pthread -Wall -Wextra
> +CFLAGS += -I../../../../usr/include/
> +LDFLAGS += -pthread
> +
> +TEST_PROGS = sync_test
> +
> +all: $(TEST_PROGS)
> +
> +include ../lib.mk
> +
> +OBJS = sync_test.o sync.o
> +
> +TESTS += sync_alloc.o
> +
> +sync_test: $(OBJS) $(TESTS)
> +
> +clean:
> +	$(RM) sync_test $(OBJS) $(TESTS)
> diff --git a/tools/testing/selftests/sync/sw_sync.h b/tools/testing/selftests/sync/sw_sync.h
> new file mode 100644
> index 0000000..e2cfc6ba
> --- /dev/null
> +++ b/tools/testing/selftests/sync/sw_sync.h
> @@ -0,0 +1,46 @@
> +/*
> + *  sw_sync abstraction
> + *
> + *  Copyright 2015-2016 Collabora Ltd.
> + *
> + *  Based on the implementation from the Android Open Source Project,
> + *
> + *  Copyright 2013 Google, Inc
> + *
> + *  Permission is hereby granted, free of charge, to any person obtaining a
> + *  copy of this software and associated documentation files (the "Software"),
> + *  to deal in the Software without restriction, including without limitation
> + *  the rights to use, copy, modify, merge, publish, distribute, sublicense,
> + *  and/or sell copies of the Software, and to permit persons to whom the
> + *  Software is furnished to do so, subject to the following conditions:
> + *
> + *  The above copyright notice and this permission notice shall be included in
> + *  all copies or substantial portions of the Software.
> + *
> + *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> + *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> + *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
> + *  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
> + *  OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
> + *  ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
> + *  OTHER DEALINGS IN THE SOFTWARE.
> + */
> +
> +#ifndef SELFTESTS_SW_SYNC_H
> +#define SELFTESTS_SW_SYNC_H
> +
> +/*
> + * sw_sync is mainly intended for testing and should not be compiled into
> + * production kernels
> + */
> +
> +int sw_sync_timeline_create(void);
> +int sw_sync_timeline_is_valid(int fd);
> +int sw_sync_timeline_inc(int fd, unsigned int count);
> +void sw_sync_timeline_destroy(int fd);
> +
> +int sw_sync_fence_create(int fd, const char *name, unsigned int value);
> +int sw_sync_fence_is_valid(int fd);
> +void sw_sync_fence_destroy(int fd);
> +
> +#endif
> diff --git a/tools/testing/selftests/sync/sync.c b/tools/testing/selftests/sync/sync.c
> new file mode 100644
> index 0000000..f3d599f
> --- /dev/null
> +++ b/tools/testing/selftests/sync/sync.c
> @@ -0,0 +1,221 @@
> +/*
> + *  sync / sw_sync abstraction
> + *  Copyright 2015-2016 Collabora Ltd.
> + *
> + *  Based on the implementation from the Android Open Source Project,
> + *
> + *  Copyright 2012 Google, Inc
> + *
> + *  Permission is hereby granted, free of charge, to any person obtaining a
> + *  copy of this software and associated documentation files (the "Software"),
> + *  to deal in the Software without restriction, including without limitation
> + *  the rights to use, copy, modify, merge, publish, distribute, sublicense,
> + *  and/or sell copies of the Software, and to permit persons to whom the
> + *  Software is furnished to do so, subject to the following conditions:
> + *
> + *  The above copyright notice and this permission notice shall be included in
> + *  all copies or substantial portions of the Software.
> + *
> + *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> + *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> + *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
> + *  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
> + *  OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
> + *  ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
> + *  OTHER DEALINGS IN THE SOFTWARE.
> + */
> +
> +#include <fcntl.h>
> +#include <malloc.h>
> +#include <poll.h>
> +#include <stdint.h>
> +#include <string.h>
> +#include <unistd.h>
> +
> +#include <sys/ioctl.h>
> +#include <sys/stat.h>
> +#include <sys/types.h>
> +
> +#include "sync.h"
> +#include "sw_sync.h"
> +
> +#include <linux/sync_file.h>
> +
> +
> +/* SW_SYNC ioctls */
> +struct sw_sync_create_fence_data {
> +	__u32	value;
> +	char	name[32];
> +	__s32	fence;
> +};
> +
> +#define SW_SYNC_IOC_MAGIC		'W'
> +#define SW_SYNC_IOC_CREATE_FENCE	_IOWR(SW_SYNC_IOC_MAGIC, 0,\
> +					      struct sw_sync_create_fence_data)
> +#define SW_SYNC_IOC_INC			_IOW(SW_SYNC_IOC_MAGIC, 1, __u32)
> +
> +
> +int sync_wait(int fd, int timeout)
> +{
> +	struct pollfd fds;
> +
> +	fds.fd = fd;
> +	fds.events = POLLIN | POLLERR;
> +
> +	return poll(&fds, 1, timeout);
> +}

I think it is a good idea to keep the sync_wait behaviour similar to
what it was on android libsync. It should be something like this:

int sw_sync_wait(int fd, int timeout)                                           
{                                                                               
        struct pollfd fds = {0};                                                
        int ret;                                                                
                                                                                
        fds.fd = fd;                                                            
        fds.events = POLLIN;                                                    
                                                                                
        do {                                                                    
                 ret = poll(&fds, 1, timeout);                                  
                 if (ret > 0) {                                                 
                          if (fds.revents & (POLLERR | POLLNVAL)) {             
                                   errno = EINVAL;                              
                                   return -1;                                   
                          }                                                     
                          return 0;                                             
                 } else if (ret == 0) {                                         
                          errno = ETIME;                                        
                          return -1;                                            
                 }                                                              
        } while (ret == -1 && (errno == EINTR || errno == EAGAIN));             
                                                                                
        return ret;                                                             
} 


Gustavo
shuah Dec. 13, 2016, 4:46 p.m. UTC | #2
Hi Gustavo,

On 11/01/2016 10:18 AM, Gustavo Padovan wrote:
> Hi Emilio,
> 
> 2016-10-19 Emilio López <emilio.lopez@collabora.co.uk>:
> 
>> These tests are based on the libsync test suite from Android.
>> This commit lays the ground for future tests, as well as includes
>> tests for a variety of basic allocation commands.
>>
>> Signed-off-by: Emilio López <emilio.lopez@collabora.co.uk>
>> ---
>>  tools/testing/selftests/Makefile          |   1 +
>>  tools/testing/selftests/sync/.gitignore   |   1 +
>>  tools/testing/selftests/sync/Makefile     |  18 +++
>>  tools/testing/selftests/sync/sw_sync.h    |  46 +++++++
>>  tools/testing/selftests/sync/sync.c       | 221 ++++++++++++++++++++++++++++++
>>  tools/testing/selftests/sync/sync.h       |  40 ++++++
>>  tools/testing/selftests/sync/sync_alloc.c |  74 ++++++++++
>>  tools/testing/selftests/sync/sync_test.c  |  71 ++++++++++
>>  tools/testing/selftests/sync/synctest.h   |  47 +++++++
>>  9 files changed, 519 insertions(+)
>>  create mode 100644 tools/testing/selftests/sync/.gitignore
>>  create mode 100644 tools/testing/selftests/sync/Makefile
>>  create mode 100644 tools/testing/selftests/sync/sw_sync.h
>>  create mode 100644 tools/testing/selftests/sync/sync.c
>>  create mode 100644 tools/testing/selftests/sync/sync.h
>>  create mode 100644 tools/testing/selftests/sync/sync_alloc.c
>>  create mode 100644 tools/testing/selftests/sync/sync_test.c
>>  create mode 100644 tools/testing/selftests/sync/synctest.h
>>
>> diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile
>> index f770dba..69cf1a6 100644
>> --- a/tools/testing/selftests/Makefile
>> +++ b/tools/testing/selftests/Makefile
>> @@ -23,6 +23,7 @@ TARGETS += seccomp
>>  TARGETS += sigaltstack
>>  TARGETS += size
>>  TARGETS += static_keys
>> +TARGETS += sync
>>  TARGETS += sysctl
>>  ifneq (1, $(quicktest))
>>  TARGETS += timers
>> diff --git a/tools/testing/selftests/sync/.gitignore b/tools/testing/selftests/sync/.gitignore
>> new file mode 100644
>> index 0000000..f5091e7
>> --- /dev/null
>> +++ b/tools/testing/selftests/sync/.gitignore
>> @@ -0,0 +1 @@
>> +sync_test
>> diff --git a/tools/testing/selftests/sync/Makefile b/tools/testing/selftests/sync/Makefile
>> new file mode 100644
>> index 0000000..620a59a
>> --- /dev/null
>> +++ b/tools/testing/selftests/sync/Makefile
>> @@ -0,0 +1,18 @@
>> +CFLAGS += -O2 -g -std=gnu89 -pthread -Wall -Wextra
>> +CFLAGS += -I../../../../usr/include/
>> +LDFLAGS += -pthread
>> +
>> +TEST_PROGS = sync_test
>> +
>> +all: $(TEST_PROGS)
>> +
>> +include ../lib.mk
>> +
>> +OBJS = sync_test.o sync.o
>> +
>> +TESTS += sync_alloc.o
>> +
>> +sync_test: $(OBJS) $(TESTS)
>> +
>> +clean:
>> +	$(RM) sync_test $(OBJS) $(TESTS)
>> diff --git a/tools/testing/selftests/sync/sw_sync.h b/tools/testing/selftests/sync/sw_sync.h
>> new file mode 100644
>> index 0000000..e2cfc6ba
>> --- /dev/null
>> +++ b/tools/testing/selftests/sync/sw_sync.h
>> @@ -0,0 +1,46 @@
>> +/*
>> + *  sw_sync abstraction
>> + *
>> + *  Copyright 2015-2016 Collabora Ltd.
>> + *
>> + *  Based on the implementation from the Android Open Source Project,
>> + *
>> + *  Copyright 2013 Google, Inc
>> + *
>> + *  Permission is hereby granted, free of charge, to any person obtaining a
>> + *  copy of this software and associated documentation files (the "Software"),
>> + *  to deal in the Software without restriction, including without limitation
>> + *  the rights to use, copy, modify, merge, publish, distribute, sublicense,
>> + *  and/or sell copies of the Software, and to permit persons to whom the
>> + *  Software is furnished to do so, subject to the following conditions:
>> + *
>> + *  The above copyright notice and this permission notice shall be included in
>> + *  all copies or substantial portions of the Software.
>> + *
>> + *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
>> + *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
>> + *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
>> + *  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
>> + *  OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
>> + *  ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
>> + *  OTHER DEALINGS IN THE SOFTWARE.
>> + */
>> +
>> +#ifndef SELFTESTS_SW_SYNC_H
>> +#define SELFTESTS_SW_SYNC_H
>> +
>> +/*
>> + * sw_sync is mainly intended for testing and should not be compiled into
>> + * production kernels
>> + */
>> +
>> +int sw_sync_timeline_create(void);
>> +int sw_sync_timeline_is_valid(int fd);
>> +int sw_sync_timeline_inc(int fd, unsigned int count);
>> +void sw_sync_timeline_destroy(int fd);
>> +
>> +int sw_sync_fence_create(int fd, const char *name, unsigned int value);
>> +int sw_sync_fence_is_valid(int fd);
>> +void sw_sync_fence_destroy(int fd);
>> +
>> +#endif
>> diff --git a/tools/testing/selftests/sync/sync.c b/tools/testing/selftests/sync/sync.c
>> new file mode 100644
>> index 0000000..f3d599f
>> --- /dev/null
>> +++ b/tools/testing/selftests/sync/sync.c
>> @@ -0,0 +1,221 @@
>> +/*
>> + *  sync / sw_sync abstraction
>> + *  Copyright 2015-2016 Collabora Ltd.
>> + *
>> + *  Based on the implementation from the Android Open Source Project,
>> + *
>> + *  Copyright 2012 Google, Inc
>> + *
>> + *  Permission is hereby granted, free of charge, to any person obtaining a
>> + *  copy of this software and associated documentation files (the "Software"),
>> + *  to deal in the Software without restriction, including without limitation
>> + *  the rights to use, copy, modify, merge, publish, distribute, sublicense,
>> + *  and/or sell copies of the Software, and to permit persons to whom the
>> + *  Software is furnished to do so, subject to the following conditions:
>> + *
>> + *  The above copyright notice and this permission notice shall be included in
>> + *  all copies or substantial portions of the Software.
>> + *
>> + *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
>> + *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
>> + *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
>> + *  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
>> + *  OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
>> + *  ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
>> + *  OTHER DEALINGS IN THE SOFTWARE.
>> + */
>> +
>> +#include <fcntl.h>
>> +#include <malloc.h>
>> +#include <poll.h>
>> +#include <stdint.h>
>> +#include <string.h>
>> +#include <unistd.h>
>> +
>> +#include <sys/ioctl.h>
>> +#include <sys/stat.h>
>> +#include <sys/types.h>
>> +
>> +#include "sync.h"
>> +#include "sw_sync.h"
>> +
>> +#include <linux/sync_file.h>
>> +
>> +
>> +/* SW_SYNC ioctls */
>> +struct sw_sync_create_fence_data {
>> +	__u32	value;
>> +	char	name[32];
>> +	__s32	fence;
>> +};
>> +
>> +#define SW_SYNC_IOC_MAGIC		'W'
>> +#define SW_SYNC_IOC_CREATE_FENCE	_IOWR(SW_SYNC_IOC_MAGIC, 0,\
>> +					      struct sw_sync_create_fence_data)
>> +#define SW_SYNC_IOC_INC			_IOW(SW_SYNC_IOC_MAGIC, 1, __u32)
>> +
>> +
>> +int sync_wait(int fd, int timeout)
>> +{
>> +	struct pollfd fds;
>> +
>> +	fds.fd = fd;
>> +	fds.events = POLLIN | POLLERR;
>> +
>> +	return poll(&fds, 1, timeout);
>> +}
> 
> I think it is a good idea to keep the sync_wait behaviour similar to
> what it was on android libsync. It should be something like this:

I didn't notice that this comment wasn't addressed. I will go ahead
and continue with the plan to get these into 4.10-rc1. If you want
to send me patch for this behavior, please do. We can address that
as a fix in 4.10-rc2

> 
> int sw_sync_wait(int fd, int timeout)                                           
> {                                                                               
>         struct pollfd fds = {0};                                                
>         int ret;                                                                
>                                                                                 
>         fds.fd = fd;                                                            
>         fds.events = POLLIN;                                                    
>                                                                                 
>         do {                                                                    
>                  ret = poll(&fds, 1, timeout);                                  
>                  if (ret > 0) {                                                 
>                           if (fds.revents & (POLLERR | POLLNVAL)) {             
>                                    errno = EINVAL;                              
>                                    return -1;                                   
>                           }                                                     
>                           return 0;                                             
>                  } else if (ret == 0) {                                         
>                           errno = ETIME;                                        
>                           return -1;                                            
>                  }                                                              
>         } while (ret == -1 && (errno == EINTR || errno == EAGAIN));             
>                                                                                 
>         return ret;                                                             
> } 
> 
> 
> Gustavo
> 

thanks,
-- Shuah
diff mbox

Patch

diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile
index f770dba..69cf1a6 100644
--- a/tools/testing/selftests/Makefile
+++ b/tools/testing/selftests/Makefile
@@ -23,6 +23,7 @@  TARGETS += seccomp
 TARGETS += sigaltstack
 TARGETS += size
 TARGETS += static_keys
+TARGETS += sync
 TARGETS += sysctl
 ifneq (1, $(quicktest))
 TARGETS += timers
diff --git a/tools/testing/selftests/sync/.gitignore b/tools/testing/selftests/sync/.gitignore
new file mode 100644
index 0000000..f5091e7
--- /dev/null
+++ b/tools/testing/selftests/sync/.gitignore
@@ -0,0 +1 @@ 
+sync_test
diff --git a/tools/testing/selftests/sync/Makefile b/tools/testing/selftests/sync/Makefile
new file mode 100644
index 0000000..620a59a
--- /dev/null
+++ b/tools/testing/selftests/sync/Makefile
@@ -0,0 +1,18 @@ 
+CFLAGS += -O2 -g -std=gnu89 -pthread -Wall -Wextra
+CFLAGS += -I../../../../usr/include/
+LDFLAGS += -pthread
+
+TEST_PROGS = sync_test
+
+all: $(TEST_PROGS)
+
+include ../lib.mk
+
+OBJS = sync_test.o sync.o
+
+TESTS += sync_alloc.o
+
+sync_test: $(OBJS) $(TESTS)
+
+clean:
+	$(RM) sync_test $(OBJS) $(TESTS)
diff --git a/tools/testing/selftests/sync/sw_sync.h b/tools/testing/selftests/sync/sw_sync.h
new file mode 100644
index 0000000..e2cfc6ba
--- /dev/null
+++ b/tools/testing/selftests/sync/sw_sync.h
@@ -0,0 +1,46 @@ 
+/*
+ *  sw_sync abstraction
+ *
+ *  Copyright 2015-2016 Collabora Ltd.
+ *
+ *  Based on the implementation from the Android Open Source Project,
+ *
+ *  Copyright 2013 Google, Inc
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a
+ *  copy of this software and associated documentation files (the "Software"),
+ *  to deal in the Software without restriction, including without limitation
+ *  the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ *  and/or sell copies of the Software, and to permit persons to whom the
+ *  Software is furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in
+ *  all copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ *  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ *  OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ *  ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ *  OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef SELFTESTS_SW_SYNC_H
+#define SELFTESTS_SW_SYNC_H
+
+/*
+ * sw_sync is mainly intended for testing and should not be compiled into
+ * production kernels
+ */
+
+int sw_sync_timeline_create(void);
+int sw_sync_timeline_is_valid(int fd);
+int sw_sync_timeline_inc(int fd, unsigned int count);
+void sw_sync_timeline_destroy(int fd);
+
+int sw_sync_fence_create(int fd, const char *name, unsigned int value);
+int sw_sync_fence_is_valid(int fd);
+void sw_sync_fence_destroy(int fd);
+
+#endif
diff --git a/tools/testing/selftests/sync/sync.c b/tools/testing/selftests/sync/sync.c
new file mode 100644
index 0000000..f3d599f
--- /dev/null
+++ b/tools/testing/selftests/sync/sync.c
@@ -0,0 +1,221 @@ 
+/*
+ *  sync / sw_sync abstraction
+ *  Copyright 2015-2016 Collabora Ltd.
+ *
+ *  Based on the implementation from the Android Open Source Project,
+ *
+ *  Copyright 2012 Google, Inc
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a
+ *  copy of this software and associated documentation files (the "Software"),
+ *  to deal in the Software without restriction, including without limitation
+ *  the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ *  and/or sell copies of the Software, and to permit persons to whom the
+ *  Software is furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in
+ *  all copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ *  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ *  OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ *  ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ *  OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <fcntl.h>
+#include <malloc.h>
+#include <poll.h>
+#include <stdint.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <sys/ioctl.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+#include "sync.h"
+#include "sw_sync.h"
+
+#include <linux/sync_file.h>
+
+
+/* SW_SYNC ioctls */
+struct sw_sync_create_fence_data {
+	__u32	value;
+	char	name[32];
+	__s32	fence;
+};
+
+#define SW_SYNC_IOC_MAGIC		'W'
+#define SW_SYNC_IOC_CREATE_FENCE	_IOWR(SW_SYNC_IOC_MAGIC, 0,\
+					      struct sw_sync_create_fence_data)
+#define SW_SYNC_IOC_INC			_IOW(SW_SYNC_IOC_MAGIC, 1, __u32)
+
+
+int sync_wait(int fd, int timeout)
+{
+	struct pollfd fds;
+
+	fds.fd = fd;
+	fds.events = POLLIN | POLLERR;
+
+	return poll(&fds, 1, timeout);
+}
+
+int sync_merge(const char *name, int fd1, int fd2)
+{
+	struct sync_merge_data data = {};
+	int err;
+
+	data.fd2 = fd2;
+	strncpy(data.name, name, sizeof(data.name) - 1);
+	data.name[sizeof(data.name) - 1] = '\0';
+
+	err = ioctl(fd1, SYNC_IOC_MERGE, &data);
+	if (err < 0)
+		return err;
+
+	return data.fence;
+}
+
+static struct sync_file_info *sync_file_info(int fd)
+{
+	struct sync_file_info *info;
+	struct sync_fence_info *fence_info;
+	int err, num_fences;
+
+	info = calloc(1, sizeof(*info));
+	if (info == NULL)
+		return NULL;
+
+	err = ioctl(fd, SYNC_IOC_FILE_INFO, info);
+	if (err < 0) {
+		free(info);
+		return NULL;
+	}
+
+	num_fences = info->num_fences;
+
+	if (num_fences) {
+		info->flags = 0;
+		info->num_fences = num_fences;
+
+		fence_info = calloc(num_fences, sizeof(*fence_info));
+		if (!fence_info) {
+			free(info);
+			return NULL;
+		}
+
+		info->sync_fence_info = (uint64_t)fence_info;
+
+		err = ioctl(fd, SYNC_IOC_FILE_INFO, info);
+		if (err < 0) {
+			free(fence_info);
+			free(info);
+			return NULL;
+		}
+	}
+
+	return info;
+}
+
+static void sync_file_info_free(struct sync_file_info *info)
+{
+	free((void *)info->sync_fence_info);
+	free(info);
+}
+
+int sync_fence_size(int fd)
+{
+	int count;
+	struct sync_file_info *info = sync_file_info(fd);
+
+	if (!info)
+		return 0;
+
+	count = info->num_fences;
+
+	sync_file_info_free(info);
+
+	return count;
+}
+
+int sync_fence_count_with_status(int fd, int status)
+{
+	unsigned int i, count = 0;
+	struct sync_fence_info *fence_info = NULL;
+	struct sync_file_info *info = sync_file_info(fd);
+
+	if (!info)
+		return -1;
+
+	fence_info = (struct sync_fence_info *)info->sync_fence_info;
+	for (i = 0 ; i < info->num_fences ; i++) {
+		if (fence_info[i].status == status)
+			count++;
+	}
+
+	sync_file_info_free(info);
+
+	return count;
+}
+
+int sw_sync_timeline_create(void)
+{
+	return open("/sys/kernel/debug/sync/sw_sync", O_RDWR);
+}
+
+int sw_sync_timeline_inc(int fd, unsigned int count)
+{
+	__u32 arg = count;
+
+	return ioctl(fd, SW_SYNC_IOC_INC, &arg);
+}
+
+int sw_sync_timeline_is_valid(int fd)
+{
+	int status;
+
+	if (fd == -1)
+		return 0;
+
+	status = fcntl(fd, F_GETFD, 0);
+	return (status >= 0);
+}
+
+void sw_sync_timeline_destroy(int fd)
+{
+	if (sw_sync_timeline_is_valid(fd))
+		close(fd);
+}
+
+int sw_sync_fence_create(int fd, const char *name, unsigned int value)
+{
+	struct sw_sync_create_fence_data data = {};
+	int err;
+
+	data.value = value;
+	strncpy(data.name, name, sizeof(data.name) - 1);
+	data.name[sizeof(data.name) - 1] = '\0';
+
+	err = ioctl(fd, SW_SYNC_IOC_CREATE_FENCE, &data);
+	if (err < 0)
+		return err;
+
+	return data.fence;
+}
+
+int sw_sync_fence_is_valid(int fd)
+{
+	/* Same code! */
+	return sw_sync_timeline_is_valid(fd);
+}
+
+void sw_sync_fence_destroy(int fd)
+{
+	if (sw_sync_fence_is_valid(fd))
+		close(fd);
+}
diff --git a/tools/testing/selftests/sync/sync.h b/tools/testing/selftests/sync/sync.h
new file mode 100644
index 0000000..fb71561
--- /dev/null
+++ b/tools/testing/selftests/sync/sync.h
@@ -0,0 +1,40 @@ 
+/*
+ *  sync abstraction
+ *  Copyright 2015-2016 Collabora Ltd.
+ *
+ *  Based on the implementation from the Android Open Source Project,
+ *
+ *  Copyright 2012 Google, Inc
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a
+ *  copy of this software and associated documentation files (the "Software"),
+ *  to deal in the Software without restriction, including without limitation
+ *  the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ *  and/or sell copies of the Software, and to permit persons to whom the
+ *  Software is furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in
+ *  all copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ *  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ *  OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ *  ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ *  OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef SELFTESTS_SYNC_H
+#define SELFTESTS_SYNC_H
+
+#define FENCE_STATUS_ERROR	(-1)
+#define FENCE_STATUS_ACTIVE	(0)
+#define FENCE_STATUS_SIGNALED	(1)
+
+int sync_wait(int fd, int timeout);
+int sync_merge(const char *name, int fd1, int fd2);
+int sync_fence_size(int fd);
+int sync_fence_count_with_status(int fd, int status);
+
+#endif
diff --git a/tools/testing/selftests/sync/sync_alloc.c b/tools/testing/selftests/sync/sync_alloc.c
new file mode 100644
index 0000000..66a28af
--- /dev/null
+++ b/tools/testing/selftests/sync/sync_alloc.c
@@ -0,0 +1,74 @@ 
+/*
+ *  sync allocation tests
+ *  Copyright 2015-2016 Collabora Ltd.
+ *
+ *  Based on the implementation from the Android Open Source Project,
+ *
+ *  Copyright 2012 Google, Inc
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a
+ *  copy of this software and associated documentation files (the "Software"),
+ *  to deal in the Software without restriction, including without limitation
+ *  the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ *  and/or sell copies of the Software, and to permit persons to whom the
+ *  Software is furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in
+ *  all copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ *  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ *  OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ *  ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ *  OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include "sync.h"
+#include "sw_sync.h"
+#include "synctest.h"
+
+int test_alloc_timeline(void)
+{
+	int timeline, valid;
+
+	timeline = sw_sync_timeline_create();
+	valid = sw_sync_timeline_is_valid(timeline);
+	ASSERT(valid, "Failure allocating timeline\n");
+
+	sw_sync_timeline_destroy(timeline);
+	return 0;
+}
+
+int test_alloc_fence(void)
+{
+	int timeline, fence, valid;
+
+	timeline = sw_sync_timeline_create();
+	valid = sw_sync_timeline_is_valid(timeline);
+	ASSERT(valid, "Failure allocating timeline\n");
+
+	fence = sw_sync_fence_create(timeline, "allocFence", 1);
+	valid = sw_sync_fence_is_valid(fence);
+	ASSERT(valid, "Failure allocating fence\n");
+
+	sw_sync_fence_destroy(fence);
+	sw_sync_timeline_destroy(timeline);
+	return 0;
+}
+
+int test_alloc_fence_negative(void)
+{
+	int fence, timeline;
+
+	timeline = sw_sync_timeline_create();
+	ASSERT(timeline > 0, "Failure allocating timeline\n");
+
+	fence = sw_sync_fence_create(-1, "fence", 1);
+	ASSERT(fence < 0, "Success allocating negative fence\n");
+
+	sw_sync_fence_destroy(fence);
+	sw_sync_timeline_destroy(timeline);
+	return 0;
+}
diff --git a/tools/testing/selftests/sync/sync_test.c b/tools/testing/selftests/sync/sync_test.c
new file mode 100644
index 0000000..e471ba9
--- /dev/null
+++ b/tools/testing/selftests/sync/sync_test.c
@@ -0,0 +1,71 @@ 
+/*
+ *  sync test runner
+ *  Copyright 2015-2016 Collabora Ltd.
+ *
+ *  Based on the implementation from the Android Open Source Project,
+ *
+ *  Copyright 2012 Google, Inc
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a
+ *  copy of this software and associated documentation files (the "Software"),
+ *  to deal in the Software without restriction, including without limitation
+ *  the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ *  and/or sell copies of the Software, and to permit persons to whom the
+ *  Software is furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in
+ *  all copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ *  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ *  OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ *  ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ *  OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+
+#include "synctest.h"
+
+static int run_test(int (*test)(void), char *name)
+{
+	int result;
+	pid_t childpid;
+
+	fflush(stdout);
+	childpid = fork();
+
+	if (childpid) {
+		waitpid(childpid, &result, 0);
+		if (WIFEXITED(result))
+			return WEXITSTATUS(result);
+		return 1;
+	}
+
+	printf("[RUN]\tExecuting %s\n", name);
+	exit(test());
+}
+
+int main(void)
+{
+	int err = 0;
+
+	printf("[RUN]\tTesting sync framework\n");
+
+	err += RUN_TEST(test_alloc_timeline);
+	err += RUN_TEST(test_alloc_fence);
+	err += RUN_TEST(test_alloc_fence_negative);
+
+	if (err)
+		printf("[FAIL]\tsync errors: %d\n", err);
+	else
+		printf("[OK]\tsync\n");
+
+	return !!err;
+}
diff --git a/tools/testing/selftests/sync/synctest.h b/tools/testing/selftests/sync/synctest.h
new file mode 100644
index 0000000..7d2d8ce
--- /dev/null
+++ b/tools/testing/selftests/sync/synctest.h
@@ -0,0 +1,47 @@ 
+/*
+ *  sync tests
+ *  Copyright 2015-2016 Collabora Ltd.
+ *
+ *  Based on the implementation from the Android Open Source Project,
+ *
+ *  Copyright 2012 Google, Inc
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a
+ *  copy of this software and associated documentation files (the "Software"),
+ *  to deal in the Software without restriction, including without limitation
+ *  the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ *  and/or sell copies of the Software, and to permit persons to whom the
+ *  Software is furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in
+ *  all copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ *  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ *  OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ *  ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ *  OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef SELFTESTS_SYNCTEST_H
+#define SELFTESTS_SYNCTEST_H
+
+#include <stdio.h>
+
+#define ASSERT(cond, msg) do { \
+	if (!(cond)) { \
+		printf("[BAD]\t%s", (msg)); \
+		return 1; \
+	} \
+} while (0)
+
+#define RUN_TEST(x) run_test((x), #x)
+
+/* Allocation tests */
+int test_alloc_timeline(void);
+int test_alloc_fence(void);
+int test_alloc_fence_negative(void);
+
+#endif